Two Michigan companies build the combat optics that armed a generation of American rifles: Trijicon and EOTech. Trijicon makes the ACOG — the battery-free magnified prism sight that glows day or night with no electronics to fail. EOTech invented the holographic weapon sight — the ring-and-dot reticle that lets you get on target impossibly fast with both eyes open. They aim two completely different ways. Here is the data, side by side, and which to actually buy.

Short answer: buy Trijicon’s ACOG when you want magnification and an optic that never needs a battery — 4x glass, a bullet-drop reticle out to 800 meters, and fiber-optic-plus-tritium illumination that just works. Buy EOTech’s holographic sight when you want maximum close-quarters speed — the 68-MOA ring snaps your eye to target with both eyes open, it’s lighter and cheaper, and it’s the best base for a 1x/3x magnifier setup. Trijicon wins on magnification and battery-free reliability; EOTech wins on close-quarters speed, modularity and value.

Who wins each category

Category	Winner
Magnification / mid-to-long range	Trijicon (ACOG 4x)
Close-quarters speed	EOTech (holographic)
Battery-free operation	Trijicon (fiber + tritium)
Reticle versatility	EOTech (ring + dot)
Both-eyes-open shooting	EOTech
Weight	EOTech (11.2 vs 15.1 oz)
Value / price	EOTech (~$700 vs ~$1,450)
1x/3x magnifier pairing	EOTech (large window)
US manufacturing	Even (both Michigan)
Best DMR / designated-marksman optic	Trijicon

Trijicon vs EOTech at a glance

	Trijicon	EOTech
Founded	1981 (Glyn Bindon)	1995 (invented the holographic sight)
Made in	USA (Wixom, Michigan)	USA (Ann Arbor, Michigan)
Known for	Battery-free magnified ACOG	The holographic weapon sight
Flagship	ACOG 4×32 (TA31)	EXPS3 holographic sight
Aiming style	Magnified prism, fiber + tritium	1x holographic, both eyes open
Also makes	MRO & RMR red dots	Vudu LPVOs & magnifiers
Best for	Magnification, battery-free, mid-long range	CQB speed, modular 1x/3x, value

Trijicon vs EOTech: flagship combat optics compared

The signature optic from each brand, head to head — the Trijicon ACOG TA31 (4×32) against the EOTech EXPS3-0 holographic sight. They’re built for different jobs: magnified prism versus 1x holographic. Specs from the manufacturers.

Spec	Trijicon ACOG TA31 (4×32)	EOTech EXPS3-0
Type	Fixed 4x prism	Holographic (1x)
Magnification	4x	1x (both eyes open)
Reticle	Illuminated BDC to ~800 m	68 MOA ring + 1 MOA dot
Illumination	Fiber optic + tritium (no battery)	Holographic laser (battery)
Battery	None	1× CR123
Battery life	N/A — battery-free	~1,000 hours
Weight	15.1 oz	11.2 oz
Best range	Mid-to-long	Close-to-mid
Made in	USA (Michigan)	USA (Michigan)
Street price	around $1,450	around $700

This isn’t a like-for-like duel so much as a choice of philosophy. The ACOG gives you 4x magnification and a bullet-drop reticle out to 800 meters, all lit by fiber optics and tritium so there’s never a battery to die — the trade-offs are a fixed eye position, more weight, and a higher price. The EOTech gives you a fast holographic ring-and-dot at true 1x with both eyes open, lighter and about half the cost, and pairs beautifully with a flip-to-side magnifier — the trade-off is that you manage a battery. Pick the aiming style that fits how and how far you shoot.

Who each brand is

Trijicon was founded in 1981 by Glyn Bindon in Wixom, Michigan, and built its name on self-illuminated aiming that needs no batteries. Its ACOG pairs a fiber-optic collector that brightens the reticle in daylight with a tritium lamp that lights it in the dark, and it armed US service rifles for two decades as the issued RCO. Trijicon also makes the MRO and RMR red dots, but the battery-free magnified ACOG is its signature — the optic for shooters who want magnification and never want to think about power.

EOTech invented the holographic weapon sight. Spun out of the University of Michigan’s ERIM research institute in 1995 and based in Ann Arbor, Michigan, it showed the first holographic sight at the 1996 SHOT Show and has built its HWS line in Michigan ever since. The holographic reticle — a big ring around a small dot, floating on a large rectangular window — is prized for how fast it gets you on target with both eyes open, which made it a favorite on military and police carbines. EOTech now also makes Vudu LPVOs and G-series magnifiers.

Magnification and range

For reaching out, Trijicon wins. The ACOG’s 4x magnification and calibrated BDC reticle make hits to 500–800 meters realistic in a compact, rugged package — it’s a genuine designated-marksman optic. The EOTech is a 1x sight; paired with a 3x magnifier it stretches to mid-range, but as a standalone it’s built for speed up close, not distance. If you need magnification and reach, the ACOG is the answer.

Edge: Trijicon.

Close-quarters speed

Flip it around for CQB. The EOTech’s holographic 68-MOA ring pulls your eye to center instantly and the huge window makes both-eyes-open shooting effortless — it’s one of the fastest aiming systems ever made for close range. The ACOG can be run both-eyes-open with the Bindon Aiming Concept, but a fixed 4x with eye-relief constraints is simply not as fast up close as a 1x holographic sight. For speed inside 100 yards, EOTech leads.

Edge: EOTech.

Battery-free vs battery

The ACOG’s headline advantage is that it has no battery at all — fiber optics run it in daylight and tritium at night, so it can never be switched off, run flat, or fail electronically. The EOTech runs about 1,000 hours on a CR123, which is fine with the discipline to switch it off, but it’s a power source you manage. For pure set-it-and-forget-it reliability with zero electronics, Trijicon has the edge.

Edge: Trijicon.

Weight, value and modularity

EOTech takes this group. At 11.2 oz it’s lighter than the 15.1-oz ACOG, it costs roughly half as much (~$700 vs ~$1,450), and its large window makes it the ideal base for a fast 1x/3x setup with a flip-to-side magnifier. The ACOG is a superb fixed-magnification optic but it’s pricier, heavier and less modular. For value and a build-your-own-magnification setup, EOTech wins.

Edge: EOTech.

Durability and pedigree

Both are combat-proven and made in the USA. The ACOG’s battery-free design and forged housing give it a legendary reputation for surviving anything, and it served as the US military’s issued rifle combat optic for years. EOTech’s holographic sights are tough and widely fielded too; older models had a documented thermal-drift issue that current production has addressed. Both will almost certainly outlast the rifle. Call it even, with the ACOG’s no-electronics simplicity a slight reliability plus.

Edge: even.

Where each one wins

Buy Trijicon if…

You want magnification: the ACOG’s 4x and BDC reticle reach out to 800 meters.
You never want a battery: fiber optics and tritium light the reticle with no power.
You want a DMR optic: a rugged, magnified sight for designated-marksman work.

Buy EOTech if…

You want CQB speed: the holographic ring-and-dot is unmatched up close with both eyes open.
You want value and light weight: about half the price and lighter than an ACOG.
You want a 1x/3x setup: the large window is the perfect base for a flip-to-side magnifier.

The honest verdict

There’s no loser — both are Michigan-made, both are combat-proven, and both are icons for good reason. It comes down to how far you shoot. For magnification, reach and an optic that never needs a battery, Trijicon’s ACOG is the pick — it’s a genuine mid-to-long-range combat optic that just works. For close-quarters speed, both-eyes-open shooting, lighter weight, better value, and the best base for a 1x/3x magnifier setup, EOTech is the pick. If your fight is close and fast, go EOTech; if it stretches out and you want magnification without electronics, go ACOG. Many shooters even own both, on different rifles for different jobs.

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